Chevrolet Silverado / GMC Sierra. Manual — part 1856
Ensure the Balancer is Completely Installed
Crankshaft Balancer Bolt - First Pass - Install a
NEW Bolt After the Installation Pass and Tighten as
Described in the First and Final Passes
50 N.m
37 lb ft
Crankshaft Balancer Bolt - Final Pass
140 degrees
Crankshaft Bearing Cap M8 Bolts
25 N.m
18 lb ft
Crankshaft Bearing Cap M10 Bolts - First Pass in
Sequence
20 N.m
15 lb ft
Crankshaft Bearing Cap M10 Bolts - Final Pass in
Sequence
80 degrees
Crankshaft Bearing Cap M10 Studs - First Pass in
Sequence
20 N.m
15 lb ft
Crankshaft Bearing Cap M10 Studs - Final Pass in
Sequence
51 degrees
Crankshaft Oil Deflector Nuts
25 N.m
18 lb ft
Crankshaft Position (CKP) Sensor Bolt
25 N.m
18 lb ft
Crankshaft Rear Oil Seal Housing Bolts
30 N.m
22 lb ft
Crossbar Bolts/Nuts - 1500 Series
100 N.m
74 lb ft
Crossbar Bolts/Nuts - 2500 Series
120 N.m
89 lb ft
Cylinder Head M8 Bolts - in Sequence
30 N.m
22 lb ft
Cylinder Head M11 Bolts - First Pass in Sequence
30 N.m
22 lb ft
Cylinder Head M11 Bolts - Second Pass in
Sequence
90 degrees
Cylinder Head M11 Bolts - Final Pass in Sequence
70 degrees
Cylinder Head Plug
20 N.m
15 lb ft
Differential Carrier-to-Crossbar Nuts
100 N.m
74 lb ft
Engine Block Coolant Drain Hole Plug
60 N.m
44 lb ft
Engine Block Coolant Heater
50 N.m
37 lb ft
Engine Block Oil Gallery Plugs
60 N.m
44 lb ft
Engine Harness Ground Strap Bolt/Stud
16 N.m
12 lb ft
Engine Harness-to-Generator Bracket Bolt
9 N.m
80 lb in
Engine Harness Retainer-to-Intake Manifold Nut
5 N.m
44 lb in
Engine Mount Bracket Through Bolt
100 N.m
74 lb ft
Engine Mount-to-Engine Block Bolts
50 N.m
37 lb ft
Engine Mount-to-Frame Bolts
65 N.m
48 lb ft
Engine Shield-to-Crossbar Bolts
20 N.m
15 lb ft
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Evaporative (EVAP) Emission Pipe Bracket Nut
20 N.m
15 lb ft
Exhaust Manifold Bolts - First Pass
15 N.m
11 lb ft
Exhaust Manifold Bolts - Final Pass
20 N.m
15 lb ft
Exhaust Manifold Heat Shield Bolts
9 N.m
80 lb in
Exhaust Manifold Studs
20 N.m
15 lb ft
Flex Plate-to-Torque Converter Bolts - 4L60-
E/4L70-E/6L80 Transmission
63 N.m
47 lb ft
Flex Plate-to-Torque Converter Bolts - 4L80-E
Transmission
60 N.m
44 lb ft
Front Cover Bolts
25 N.m
18 lb ft
Front Drive Axle Bracket Bolts
90 N.m
67 lb ft
Fuel Injection Fuel Rail Bolts
10 N.m
89 lb in
Fuel Injection Fuel Rail Crossover Tube Bolts
3.8 N.m
34 lb in
Fuel Rail Stop Bracket Bolt
50 N.m
37 lb ft
Generator Bracket Bolts
50 N.m
37 lb ft
Heater Hose Bracket Nut
9 N.m
80 lb in
Ignition Coil Bracket-to-Valve Rocker Arm Cover
Studs
12 N.m
106 lb in
Ignition Coil-to-Bracket Bolts
10 N.m
89 lb in
Intake Manifold Bolts - First Pass in Sequence
5 N.m
44 lb in
Intake Manifold Bolts - Final Pass in Sequence
10 N.m
89 lb in
Intake Manifold Sight Shield Retainer Bolts
5 N.m
44 lb in
J 41798 M8 Bolt
25 N.m
18 lb ft
J 41798 M10 Bolts
50 N.m
37 lb ft
Knock Sensor Bolts
25 N.m
18 lb ft
Negative Battery Cable Stud
25 N.m
18 lb ft
Oil Filter
30 N.m
22 lb ft
Oil Filter Fitting
55 N.m
40 lb ft
Oil Level Indicator Switch
20 N.m
15 lb ft
Oil Level Indicator Tube Bolt
25 N.m
18 lb ft
Oil Pan Baffle Bolts
9 N.m
80 lb in
Oil Pan Closeout Cover Bolt - Left Side
9 N.m
80 lb in
Oil Pan Closeout Cover Bolt - Right Side
9 N.m
80 lb in
Oil Pan Cover Bolts
9 N.m
80 lb in
Oil Pan Drain Plug
25 N.m
18 lb ft
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
ENGINE MECHANICAL SPECIFICATIONS (RPO LY5 VIN J)
Oil Pan M6 Bolts - Oil Pan-to-Rear Housing
12 N.m
106 lb in
Oil Pan M8 Bolts - Oil Pan-to-Engine Block and Oil
Pan-to-Front Cover
25 N.m
18 lb ft
Oil Pan Skid Plate Bolts
28 N.m
21 lb ft
Oil Pressure Sensor
35 N.m
26 lb ft
Oil Pump Cover Bolts
12 N.m
106 lb in
Oil Pump Relief Valve Plug
12 N.m
106 lb in
Oil Pump Screen Nuts
25 N.m
18 lb ft
Oil Pump Screen-to-Oil Pump Bolts
12 N.m
106 lb in
Oil Pump-to-Engine Block Bolts
25 N.m
18 lb ft
Power Steering Pump-to-Engine Block Bolts
50 N.m
37 lb ft
Spark Plugs
15 N.m
11 lb ft
Throttle Body Bolts
10 N.m
89 lb in
Throttle Body Nuts
10 N.m
89 lb in
Throttle Body Studs
6 N.m
53 lb in
Timing Chain Tensioner Bolts
25 N.m
18 lb ft
Transfer Case Vent Hose Bracket Nut
20 N.m
15 lb ft
Transmission Housing-to-Engine Bolts/Studs
50 N.m
37 lb ft
Transmission Oil Cooler Line Clip Bolt
9 N.m
80 lb in
Transmission Oil Level Indicator Tube Nut
18 N.m
13 lb ft
Valley Cover Bolts
25 N.m
18 lb ft
Valve Lifter Guide Bolts
12 N.m
106 lb in
Valve Lifter Oil Manifold Bolts
25 N.m
18 lb ft
Valve Rocker Arm Bolts
30 N.m
22 lb ft
Valve Rocker Arm Cover Bolts
12 N.m
106 lb in
Water Inlet Housing Bolts
15 N.m
11 lb ft
Water Pump Bolts - First Pass
15 N.m
11 lb ft
Water Pump Bolts - Final Pass
30 N.m
22 lb ft
Application
Specification
Metric
English
General
Engine Type
V8
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Displacement
5.3L
325 CID
RPO
LY5
VIN
J
Bore
96.0-96.018 mm
3.779-3.78 in
Stroke
92.0 mm
3.622 in
Compression Ratio
9.95:1
Firing Order
1-8-7-2-6-5-4-3
Active Fuel Management Cylinders
1-4-6-7
Spark Plug Gap
1.02 mm
0.04 in
Block
Camshaft Bearing Bore 1 and 5 Diameter
59.58-59.63 mm
2.345-2.347 in
Camshaft Bearing Bore 2 and 4 Diameter
59.08-59.13 mm
2.325-2.327 in
Camshaft Bearing Bore 3 Diameter
58.58-58.63 mm
2.306-2.308 in
Crankshaft Main Bearing Bore Diameter
69.871-69.889 mm
2.75-2.751 in
Crankshaft Main Bearing Bore Out-of-Round
0.006 mm
0.0002 in
Cylinder Bore Diameter
96.0-96.018 mm
3.779-3.78 in
Cylinder Head Deck Height - Measuring from
the Centerline of Crankshaft to the Deck Face
234.57-234.82 mm
9.235-9.245 in
Cylinder Head Deck Surface Flatness -
Measured Within a 152.4 mm (6.0 in) Area
0.11 mm
0.004 in
Cylinder Head Deck Surface Flatness -
Measuring the Overall Length of the Block
Deck
0.22 mm
0.008 in
Valve Lifter Bore Diameter
21.417-21.443 mm
0.843-0.844 in
Camshaft
Camshaft End Play
0.025-0.305 mm
0.001-0.012 in
Camshaft Journal Diameter
54.99-55.04 mm
2.164-2.166 in
Camshaft Journal Out-of-Round
0.025 mm
0.001 in
Camshaft Lobe Lift - Exhaust - Non Active
Fuel Management Cylinders
7.2 mm
0.283 in
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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